| 功能 | 命令 |
| 删除音轨 | ffmpeg.exe -i input.mp4 -c:v copy -an output.mp4 |
| 替换音轨 | ffmpeg -i input.mp4 -i new.mp3 -c:v copy -map 0:v:0 -map 1:a:0 output.mp4 |
| 截取压缩 | ffmpeg -i "input.mp4" -fs 500MB "output.mp4" |
| H.265压缩 | ffmpeg -i "input.mp4" -c:v libx265 -preset medium -b:v 369k -c:a aac -b:a 128k -crf 26 -vf "scale=-2:720" -r 25 "output.mp4" |
| H.265显卡加速 | ffmpeg -i "input.mp4" -c:v hevc_amf -preset speed -b:v 114k -c:a aac -b:a 128k -crf 28 -vf "scale=-2:720" -r 25 "output.mp4" |
| H.265画质恒定 | ffmpeg -i "input.mp4" -c:v libx265 -preset slow -crf 25 -c:a aac -b:a 128k -r 25 "output.mp4" |
| H.265恒定加速 | ffmpeg -i "input.mp4" -c:v hevc_amf -preset slow -crf 25 -c:a aac -b:a 128k -r 25 "output.mp4" |
| H.264压缩 | ffmpeg -i "input.mp4" -c:v libx264 -b:v 369k -c:a aac -b:a 128k -preset medium -crf 21 -vf "scale=-2:720" -r 25 "output.mp4" |